20322856 has 48 divisors (see below), whose sum is σ = 41696640. Its totient is φ = 9275040.

The previous prime is 20322833. The next prime is 20322919. The reversal of 20322856 is 65822302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89415 + ... + 89641.

It is an arithmetic number, because the mean of its divisors is an integer number (868680).

Almost surely, 2^20322856 is an apocalyptic number.

It is an amenable number.

20322856 is an abundant number, since it is smaller than the sum of its proper divisors (21373784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20322856 is a wasteful number, since it uses less digits than its factorization.

20322856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20322856 is about 4508.0878429773. The cubic root of 20322856 is about 272.8945819733.

The spelling of 20322856 in words is "twenty million, three hundred twenty-two thousand, eight hundred fifty-six".